Dust-collector.



No. 740,624. Patented ont. 7, |902. w. w. sLY.

DUST COLLECTOR.

(Application med xu. 17, 1902.)

(lo Rodel.)

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Unirse Sterns filtranti @trice \VILLIAM \V. SLY, OF CLEVELAND, OlllO.

DUST=COLLECTOR- SPECEFIGATON forming part of Letters Patent No. 710,624, dated October '7, 1902.

Application filed March 17, 1902. YSerial No. 98,663. (No model.)

['o (LZ/Z whom, t Hwy concern:

Be it known that l, WILLIAM "V. SLY, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and nseful Improvements in Dust-Collectors; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which forni a part of this specification. V

This invention relates to dust-collectors.

The object of the invention is to forni a dust-collector particularly useful in handling mineral-dust-such as sand from castings, dust from emery-wheels, tbc.

A further object is to improve the construction of the screens used in such collectors, so that they will be strong enough to handle successfully the mineral-dust from foundries and metal-working factories.

A further object comprises means to jar or shake the screen-frame, so as to dislodge the dust therefrom.

A further object is to assist the operation of the machine by providing a rareiied-air chamber in which much of the dust will settle by its own weight.

A further object is to generally improve the construction of such machines.

Vit-h these and other objects in view the invention is hereinafter described,and is illus# trated in the accompanying drawings, in which- Figure l is a side elevation of the machine with the side of the casing removed to show the interior thereof. Fig. 2 is a horizontal section. Fig. is a plan view of one of the screen-frames with the screening-cloth removed.

Referring specifically to the drawings, 6 indicates the walls of the casing, which is divided into two chambers 7 and 8 by a series of screens 9 and partition 10. Air is exhausted from the chamber 8 through a pipe SP', and a pipe 7 serves to conduct the dusty air to the chamber 7. ln machines of this kind it is preferable to exhaust pure air from the casing by the fan rather than to force dusty air into the casing, since by the former method a chamber of rarefied air is formed before the screen in which the heavier dust particles settle without being drawn against the screen. This rareiied-air chamber is indicated at 7 in my construction and is provided with a door 7b, through which it may be entered to remove the dust which collects on the floor and to sweep or repair the screens when necessary. The screens are disposed vertically in azigzag course across the casing and are supported at one edge only by attachment to the partition lO, from which they project into the rarefied-air chamber. By sup porting the screens at one edge only they are less rigid than they otherwise would be and are consequently more readily shaken or j arred. Bars ll are secured to and extend horizontally across the back edges of the screen-frames, and the screens are jai-red by hammers l2, which are hinged to the door and the ceiling of the casing and alternately strike the said bars. The hammers are lifted by trippingcams 13 on a shaft 13, which extends through the walls of the casing and is'rotated in any proper manner. The horizontal bars l1 are connected by vertical braces l1, carrying bearings 1lb for the shaft, by which construction the parts are strengthened and braced and the screen and shaft held at proper distance. Springs ll bring the hammers forci bly against the bars when they are tripped by the cams.

The screens consist of rectangular frames 9, covered with suitable filtering-clotli,\vliich is tacked or otherwise secured to the frames, and the frames are strengthened by diagonal braces 9b. Wires lOa are stretched across the frame, between the side bars thereof, on both sides of the filtering-cloth. This prevents the cloth from bulging and meeting under the air-pressure and also tends to communicate the jar given by the hammers to all parts of the screen. The zigzag arrangement of the screens produces V-shaped spaces therebetween, permitting ready access there to for the purpose of cleaning or repairing. The joints between the screens and also between the screens and the partition are made as air-tight as possible, as will be understood.

IOO

strike the screens at the supported side at 0pposite ends alternately.

2. In a dust-collector, in combination, the casing 6, the partition l0 therein, the screens 9 supported at one edge by the partition, means to jar the screens, and inlet and eX- haust pipes for the easing.

In testimony whereof I do ax my signature in presence of two witnesses.

WILLIAM WV. SLY.

Witnesses:

JOHN A. BOMMHARDT, LoTTIE NEWBURN. 

